Water-sprinkling device



March 31, 1931. F. c. ORR

WATER SPRINKLING DEVICE- Filed Jan. '7 192 Patented Mar. 31, 1931 FINGAL 0. can, or nosnivrnnn, CALIFORNIA WATER-SPRINKLING- DEVICE Application filed January 7, 1926. Serial No. 79,734.

My invention relates to a sprinkler vor water distributing device of the rotary arm type, such as is disclosed in my prior Patent No. 1,649,179.

In the form of rotary sprinkler disclosed in my aforesaid co-pending application, a horizontally disposed tubular arm is provided at one end with a jet nozzle and this arm is mounted to rotate onva vertical axis.

The power necessary to cause the arm to rotate, is obtained by, the reactive force of the water dischargingfrom the .nozzle, it is the purpose of my present invention to. provide simple and efficient meansofor utilizing impact orimpinging force of the water jet that discharges from the nozzle against a relatively small fixed member for overcoming the starting inertia of thehorizontally revolving armvin order that the latter may freely rotate with a relatively slow erratic or step-bystep-movement and thus distribute the water that discharges from the jet nozzle throughout a considerable area in all directions from the rotary sprinkler arm. e

Further objects of my invention are, to provide an attachment for the spray nozzles of water sprinklers that may be economically produced and installed, capable of ready adjustment to suit different conditions and, further, to provide a device of the character referred to that will be very efi'ective'in performing its intended functions.

With the foregoing and other objects in view, my invention consists in certain novel features of construction and arrangement of parts that will be hereinafter more fully-described and claimed and illustrated in the accompanying drawings in which:

7 Fig. 1 is a side elevational view of a rotary sprinkler arm, the jet nozzle of which is provided with an attachment embodying my invention.

Fig. 2 is a section taken lengthwise through the jet nozzle of a rotary sprinkler and show ing the attachment applied: thereto.

Fig. 3' is a sectional view taken through the end of a jet nozzle and showing a modified form ofthe attachment.-

" "Fig. 4 is a sectional view taken through the for use, the arm 12 is rotated to a slight decentral portion of a jet nozzle and showing a further modified form of the attachment.

Fig. 5 is a plan view of the form of device seenlnFig. V

Fig. 6 is a sectional view taken through a central portion of a jet nozzle and showing a further modified formof the attachment.

Fig. 7 is a plan View of the end portion of a jet nozzle and showing a further modified form of the attachment.

Fig. 8 is a vertical section taken approxn mately on the line 8-8 of Fig. 7.. j Referring by numerals to the accompany ing drawings and particularly to the construction illustratedin Figs. 1 and 2, 1O designates a vertically disposed water pipe that is provided at its upper end with'a verticallyarranged bearing 11 for a horizontally disposed tubular sprinkler arm 12. o .Mounted for rotary movement on one end of the main arm 12 is a small auxiliary sprinkler arm 13, and detachably applied to the other end {of the main-sprinkler arm 12 isa jet nozzle 14. 8 V

. Theout'er portion of sprinkler arm 12, or that portion carrying the jet nozzle 14, oc- 'cupies an upwardly inclined position of approximately 15 or 20 relative to a horizontal plane andwhen the sprinkler is set up so gree in either direction so that the inclined outer end portion thereof occupies a slightly an ular position relative to the vertical plane occupied by the axis of the sprinkler arm. Thus the Water issuing from the-jet nozzle 14 has a certain degreeof reactive force which tends to rotate the arm 12 on its axis, but the lateral angular position of the outer portion of the arm is insufficient to permit the small degree of reactionary force of the jet of water to effect rotation of the sprinkler arm. In other words, the reactive force of the jet tends to rotate the sprinklerarm, but the friction that exists in the bearing 11 of said rotary arm holds the latter against rotation against 95 the reactive force of the jet.

Secured in any suitable manner to the outer end portion of the jet nozzle, is one end of a section of wire that isbent to form an inverted U-shaped member 15, the outer leg 16 of which occupies a plane at right angles to the axis of the jet nozzle 14 and the end of this leg is pointed as designated by 17. This pointed end occupies a position so that it projects into the stream or jet that issues from the jet nozzle and, as a result of the impact of the Water with the pointed end 17 a suificient degree of vibration is set up and maintained whil'e'the stream of water'is issuing from the jet nozzle, to overcome the starting inertia of the arm 12 andthussaid arm will as the inertia is overcome start and slowly rotate in its bearing and which rotation will be erratic or intermittent due to the gradual stopping and starting of said arm.

In the v:torm of attachment lllustrated inv Fig. 3, the inverted U-shaped section of wire 18, is secured to nozzle 14 by means of a-set screw'19,and the end of said member18 that is adapted to be engaged by the stream or-jet of water, is provided with a small spherical member 20, which, when the device is in use, projects a short distance into the stream or jet of water.

In the modified construction illustrated in Figs. 4 and 5, the attachment 21 is formed of a section of wire bent to form an inverted U-shaped member, one end of which is provided with an integral plate 22, throughwhich passes a screw 23, and the latter-being seated in the end of the jet nozzle. This construction enables'the' pointed end of member 21 to be adjusted across or transversely of the stream or jet of water that issues from the jet nozzle, thus varying the degree of produced vibration and reaction.

In the modified construction illustrated in Fig. 6, a lug 24 projects from the end of the jet nozzle and seated in a threaded aperture in said lug is a screw 25 having a pointed end.

26, and said screw carrying'a lock nut 27, whereby the screw may be locked in its adjusted position. I

In this form of device, the pointedfend of the screw that engages thestream or jet of water may be adjusted toward or away from the axis of said stream or jet so as to produce a greater or less-degree of vibration.

In the modified construction illustrated in Figs. 7 and 8, a split lug28 projects from. the end of the jet nozzleand clamped in said split lug is one end of a section of resilient wire, that is bent to form a large how or U- shaped member 29, the freeiend of which is pointed as designated by screw 30, and which pointed end, when the device is in use, projects a slight distance into the stream or jet of water issuing from the et nozzle.

. In this form of'device, the resiliency in the wire from which member 29 is formed,permits the pointed end of the attachment to vibrate as a result of the force ofthe water against said pointed end, and this vibratory action is sufficient to overcome the starting inertia of the rotary arm, and as a result, the

latter will rotate with a slow intermittent movement.

My invention involves the accepted prin ciple in physics; that a greater force is required to start and move a body from a posi tion of rest, than is required to keep said body in motion after it has been started and acquired a certain degree of momentum or inertia.

Thus, in my invention, I utilize the force of the jet of water for producing suflicient vibration to overcome the starting inertia of the rotary arm and thus the latter is caused to rotate with a slow step-by-step movement, which is the ideal eondition for distributing Water throughout the area covered by the sprinkler. a I p The-auxiliary sprinkler armi13' inopera tion tends to impart rotary Inotionto' the main sprinkler arm 12 through reactive forcesdeveloped while said auxili'ary arnris in operation andlikewise when thearm 12 is. slightly rotated in either direction to shift the angular position of the bent'outer portion of said arm to one side or the other'of a" vertical plane so as to determine the-direction of. rotation of the sprinklerthefl water-issuin from the jet nozzle 14: will develop'a small amount ofreactive force,but both this force and the reactive force developed by the auzril-- iary sprinkler' 13 are not sufficient to overcome the starting inertia of thesprinklerarm and thereby cause the arm to rotate asa result of the combined reactive forces. By mounting a member on the nozzle'randpermitti'ng said member to project into the jet of water issuing .therefrom',xa suflicient amount of bration is developed to, overcome the starting inertia of the sprinklerarm andthus"in"opi produce the desiredresult s. N If, without any A means, the sprinkler arm is adjusted'sothat" only reaction of the water "jet is efiectivein rotating said arm, then, latter the starting inertia has been overcome, the reactive forces will be too great and the sprinkler arm'will be rotated attoo greata speed to b'e'eifective, or to producethe desired results. I

Thus itwill be seen that I'have' provided a relatively simple and practical attachment that may be readily applied to the j et'nozzlescarried by" rotary arm'sprinklers'. and which attachment will be effective in utilizingthe force of the jet of water issuing'from'the nozzle of the sprinkler to cause therotary' arm to slowly'rotate' with an intermittent' or erratic movement and, as a result, a definite eration the same will slowly mammaarea of the ground surrounding the r'otary ibrati'on'g producing and described without departing from the spirit of the invention, the scope of which is set forth in the appended claims.

I claim as my invention:

.1. The combination with a tubular sprinkler arm mounted to rotate in a horizontal plane and provided at one end with a jet nozzle and at the opposite end with a rotating reactionary jet nozzle which jet nozzles are normally incapable of imparting rotary movement to said tubular arm, of a member secured to the end of said jet nozzle and having an arm that is disposed substantially at ri 'ht angles to the axis of said jet nozzle the ree end of which arm 00- cupies a position in the path of travel of the jet of water that issues from said jet nozzle.

2. The combination with a tubular sprinkler arm mounted to rotate in a horizontal plane of a reactionary jet nozzle mounted for rotary movement upon said sprinkler arm but normally incapable of imparting rotary movement to said tubular arm, a jet nozzle carried by said tubular arm on the opposite side of its axis from the reactionary jet nozzle, and means carried by said jet nozzle and projecting substantially at right angles into the jet of water issuing therefrom for developing suflicient vibration to overcome the starting inertia of said sprinkler arm.

In testimony whereof I aflix my signature.

FINGAL C. ORR. 

